Change the API of disk_cache::CreateCacheBackend to use scoped_ptr

content/browser/gpu/shader_disk_cache.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_GPU_SHADER_DISK_CACHE_H_
 #define CONTENT_BROWSER_GPU_SHADER_DISK_CACHE_H_
 
 #include <map>
 #include <queue>
 #include <string>
@@ skipping 57 matching lines @@
   friend class base::RefCounted<ShaderDiskCache>;
   friend class ShaderDiskCacheEntry;
   friend class ShaderDiskReadHelper;
   friend class ShaderCacheFactory;
 
   explicit ShaderDiskCache(const base::FilePath& cache_path);
   ~ShaderDiskCache();
 
   void CacheCreatedCallback(int rv);
 
-  disk_cache::Backend* backend() { return backend_; }
+  disk_cache::Backend* backend() { return backend_.get(); }
 
   void EntryComplete(void* entry);
   void ReadComplete();
 
   bool cache_available_;
   int host_id_;
   base::FilePath cache_path_;
   bool is_initialized_;
   net::CompletionCallback available_callback_;
   net::CompletionCallback cache_complete_callback_;
 
-  disk_cache::Backend* backend_;
+  scoped_ptr<disk_cache::Backend> backend_;
 
   scoped_refptr<ShaderDiskReadHelper> helper_;
   std::map<void*, scoped_refptr<ShaderDiskCacheEntry> > entry_map_;
 
   DISALLOW_COPY_AND_ASSIGN(ShaderDiskCache);
 };
 
 // ShaderCacheFactory maintains a cache of ShaderDiskCache objects
 // so we only create one per profile directory.
 class CONTENT_EXPORT ShaderCacheFactory {
@@ skipping 44 matching lines @@
   typedef std::map<base::FilePath, ShaderClearQueue> ShaderClearMap;
   ShaderClearMap shader_clear_map_;
 
   DISALLOW_COPY_AND_ASSIGN(ShaderCacheFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_SHADER_DISK_CACHE_H_